SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '13019cc30d0c18f884591e1504c398e0a8abbdb2e27778e94dcc71ab4f87d869' 
  AND token = 'm4vQPbpKfu9ZP5vfoGM6+XxtAH/kkxt+ISjWtglsgDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}